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How to check if current thread is not main thread
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Looper.myLooper() == Looper.getMainLooper()
if this returns true, then you're on the UI thread!
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How to join two generators in Python?
...tor will lower performance, and the list constructor is much more readable then the list comprehension. Your method is much more unreadable in those regards.
– Corman
May 27 at 0:48
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How to update column with null value
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However, if you are directly editing field value inside mysql workbench then use (Esc + del) keystroke to insert null value into selected column
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Writing to output window of Visual Studio
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Add the System.Diagnostics namespace, and then you can use Debug.WriteLine() to quickly print a message to the output window of the IDE. For more details, please refer to these:
How to trace and debug in Visual C#
A Treatise on Using Debug and Trace classes, includ...
jQuery see if any or no checkboxes are selected
...if an element is matching specified attribute. Applying it's as filter and then checking if you get at least one item in result is the same but imo longer and not so expressive.
– Michael Logutov
May 20 '14 at 6:22
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How to parse JSON in Python?
... Just to add that you can get the string content by calling j.read() and then use the loads method. Any way in this case the load() method takes care of calling the .read()
– rkachach
Jan 15 '16 at 6:27
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How to filter git diff based on file extensions?
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Yes, if you ensure that git expands a glob rather than your shell then it will match at any level so something like this (quotes are important) should work fine.
git diff -- '*.c' '*.h'
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Issue with virtualenv - cannot activate
...or activation you can go to the venv your virtualenv directory
by cd venv.
Then on Windows, type dir (on unix, type ls).
You will get 5 folders include, Lib, Scripts, tcl and 60
Now type .\Scripts\activate to activate your virtualenv venv.
Your prompt will change to indicate that you are now ope...
Any way to replace characters on Swift String?
...aracters, you can use components() to break the string into and array, and then you can use the join() function to put them back to together with a specified separator.
let toArray = aString.components(separatedBy: " ")
let backToString = toArray.joined(separator: "+")
Or if you're looking for a ...
Android Lint contentDescription warning
...ntDescription for all of your ImageViews. If you don't need a description, then just use:
android:contentDescription="@null"
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